
.header {
    position: fixed;
    width: 100%;
    height: 40px;
    border-bottom: 1px solid #d6d6d6;
    background-color: #fff;
    z-index: 10000;
  }
  .header .content {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 80%;
    height: 100%;
    margin: 0 auto;
  }
  .header .content a {
    font-size: 14px;
    color: black;
  }
  .header .content .fl {
    display: inline-block;
    flex: 1;
  }
  .header .content .fl a:hover {
    color: red;
    text-decoration: underline;
  }
  .header .content .mid {
    display: inline-block;
    flex: 6;
    text-align: right;
    margin-right: 50px;
  }
  .header .content .hat-entry {
    display: inline-block;
    flex: 1;
  }
  